Enhanced oil recovery with nanofluids based on aluminum oxide and 1-dodecyl-3-methylimidazolium chloride ionic liquid

Surface-active ionic liquids (SAILs) have multiplied the possibilities of surfactant enhanced oil recovery (EOR) methods. Among their multiple promising features, possibility functionalization and stability at harsh conditions should be highlighted for application. They been successfully applied to increase by improving crucial parameters such as: formulation stability, reduction water–oil interfacial tension, wettability. Recently, nanoparticles attracted attention EOR applications due capacity modify properties rock surfaces. However, date no research has conducted on combination SAILs with EOR. In this work, SAIL 1-dodecyl-3-methylimidazolium chloride, [C12mim]Cl, Al2O3 is proposed Stable dispersions in brine were achieved, using polymer polyvinylpyrrolidone (PVP) as a stabilizing agent, characterized through density dynamic viscosity measurements. According tension studies, nanofluid consisting 0.05 wt% 1.0 PVP, (5.0 NaCl) was carbonate reservoirs. The presence reduced adsorption surfactant-polymer rocks changed aged wettability from oil-wet water-wet. An additional 10.4 %OOIP achieved formulation, comparison 14.8 obtained nanofluid.